1、 Motor and drive system malfunction

1. The motor cannot start
   • Possible reasons：
     • Power failure (such as unstable voltage, loose plug).
     • Motor overload protection triggered (such as excessive load or poor heat dissipation).
     • The drive circuit or control board is damaged.
   • solution：
     • Check the power connection to ensure stable voltage (e.g. 220V ± 10%).
     • Reduce the load (such as reducing the amount of material or lowering the speed) and clean the cooling fan.
     • Contact the manufacturer to replace the driver circuit or control board.
2. Unstable or abnormal motor speed
   • Possible reasons：
     • Inverter parameter setting error (such as frequency fluctuation).
     • Motor carbon brush wear (applicable to brushed motors).
     • Loose or worn transmission components such as belts and couplings.
   • solution：
     • Re calibrate the parameters of the frequency converter to ensure stable output frequency.
     • Replace the carbon brush or switch to a brushless motor.
     • Tighten transmission components or replace worn parts.

2、 Emulsifying head and mixing system malfunction

1. Excessive vibration or noise of the emulsifying head
   • Possible reasons：
     • The emulsion head is not securely installed (such as excessive axial clearance).
     • The material contains hard particles, causing collisions between the rotor and stator.
     • Bearing damage or insufficient lubrication.
   • solution：
     • Reinstall the emulsion head to ensure that the axial clearance meets the requirements (usually<0.1mm).
     • Filter materials to remove hard particles.
     • Replace the bearings and add lubricating grease (such as high-temperature lithium grease).
2. The emulsification effect decreases
   • Possible reasons：
     • Emulsification head wear (such as stator tooth fracture or rotor corrosion).
     • Insufficient rotational speed or insufficient shear force.
     • Improper material ratio or temperature.
   • solution：
     • Replace worn emulsion heads (such as rotors and stators).
     • Increase the rotational speed or prolong the emulsification time.
     • Adjust the material ratio (such as the ratio of oil phase to water phase) or control the temperature (such as 50-70 ℃).

3、 Sealing and leakage issues

1. Mechanical seal leakage
   • Possible reasons：
     • Wear or corrosion of the sealing surface (such as long-term exposure to acidic and alkaline materials).
     • The sealing ring is aging or improperly installed.
     • Unbalanced axial force leads to seal failure.
   • solution：
     • Replace mechanical seal components (such as silicon carbide/tungsten carbide sealing surfaces).
     • Replace the sealing ring and ensure it is installed properly.
     • Adjust the axial clearance and balance the axial force.
2. Static seal leakage
   • Possible reasons：
     • O-ring or gasket aging or deformation.
     • Loose or uneven force on fastening bolts.
   • solution：
     • Replace the O-ring or gasket (such as fluororubber material).
     • Re tighten the bolts and tighten them evenly in diagonal order.

4、 Control system malfunction

1. Touch screen unresponsive or displaying abnormally
   • Possible reasons：
     • The touch screen surface is dirty or scratched.
     • Control system crashes or software malfunctions.
     • Loose or damaged connecting wires.
   • solution：
     • Clean the surface of the touch screen and avoid touching it with sharp objects.
     • Restart the device or update the control system software.
     • Check and unplug the connecting wires again.
2. Parameter settings cannot be saved
   • Possible reasons：
     • The storage battery is depleted (such as a CMOS battery).
     • Storage module malfunction.
   • solution：
     • Replace the storage battery (such as CR2032 button battery).
     • Contact the manufacturer to replace the storage module.

5、 Heating and cooling system malfunction

1. Uneven heating or uncontrolled temperature
   • Possible reasons：
     • The heating tube is damaged or has poor contact.
     • Temperature sensor malfunction (such as PT100 probe damage).
     • Improper PID parameter settings in the control system.
   • solution：
     • Replace the heating tube and check the wiring.
     • Calibrate or replace the temperature sensor.
     • Readjust PID parameters (such as proportional band, integration time).
2. Cooling system failure
   • Possible reasons：
     • Insufficient or blocked cooling water flow.
     • Scaling or corrosion of cooling coils.
   • solution：
     • Check the water pump and pipes to ensure smooth water flow.
     • Clean the cooling coil or replace corroded parts.

6、 Other common questions

1. Splashing or leakage of materials
   • Possible reasons：
     • The emulsion chamber is not tightly sealed.
     • The rotational speed is too high or the material viscosity is too low.
   • solution：
     • Check and tighten the sealing components of the cavity.
     • Reduce the rotational speed or increase the viscosity of the material (such as adding thickeners).
2. Equipment odor or smoke
   • Possible reasons：
     • Motor overload or winding short circuit.
     • The material decomposes at high temperatures.
   • solution：
     • Immediately stop the machine and check the motor and circuit.
     • Reduce the heating temperature or change the material formula.

7、 Preventive maintenance recommendations

1. routine inspection：
   • Check the power supply, seals, and transmission components before each use.
   • Clean the emulsifying head and cavity after use to prevent material residue.
2. regular maintenance：
   • Replace the lubricating grease every 3 months and check the bearings and mechanical seals.
   • Calibrate temperature sensors and control systems every 6 months.
3. Operating Specifications：
   • Avoid no-load operation or overload use.
   • Control material temperature and viscosity to avoidharshWorking conditions.
4. Spare Parts Management：
   • Reserve commonly used spare parts (such as emulsion heads, sealing rings, carbon brushes) to shorten maintenance time.